A good fertilizer and water environment not only contributes to the healthy growth of crabs, but also increases the biomass in the water body, provides sufficient natural bait for crabs, improves the immunity of crabs, reduces the occurrence of diseases, and thus improves the efficiency of breeding.
First, the principle of crab pond fertilizer water
1.Scientific fertilization:According to the water quality, substrate and growth stage of crab ponds, the types of fertilizers and the amount of fertilizer are scientifically selected. It can be used: multi-effect fertilizer and water pioneer, rich in a variety of amino acids and trace elements and other nutrients, small molecules are easy to absorb, and can quickly fertilizer water at low temperature.
2.Balanced nutrition:Ensure the balance of nutrients such as nitrogen, phosphorus, and potassium in the fertilizer to meet the growth needs of plankton.
3.Timely adjustment:According to the changes in water quality and the growth of crabs, the amount and type of fertilizer are adjusted in a timely manner to maintain the stability of the water body.
Second, the method of fertilizing the crab pond
1.Substrate Improvement:Apply an appropriate amount of organic fertilizer to the bottom of the crab pond to improve the fertility of the water body.
2.Fertilization method:The fertilizer should be evenly sprinkled in the crab pond to avoid being concentrated in a certain area. At the same time, according to the weather, water quality and crab growth, the amount and frequency of fertilizer should be adjusted in a timely manner.
3.Water quality regulation:Through measures such as adding new water, drainage, and increasing oxygen, the water quality is adjusted to keep the water fresh and dissolved oxygen sufficient.
4.Biological Regulation:Biological agents are used to regulate the microbial population in the water body, inhibit the reproduction of harmful bacteria, and improve the self-purification ability of the water body.
3. Precautions for crab pond fertilizer water
Avoid excessive fertilization, avoid fertilization under unfavorable conditions such as high temperature and low oxygen, regularly test water quality indicators to ensure that the water quality meets the requirements of aquaculture, and flexibly adjust the fertilizer and water strategy according to the actual situation of the crab pond.